Production method of glass panel unit

Abstract

The assembling step is a step of preparing an assembly. The setting step is a step of setting a plurality of holder installation areas along an outer peripheral edge of the peripheral wall. The determining step is a step of determining a first area in which the slit and the peripheral wall are not adjacent to each other in the first area and a second area in which the slit and the peripheral wall are adjacent to each other. The installation step is a step of providing a holder in the first area without providing the holder in the second area.

The invention claimed is: 
     
       1. A method for manufacturing a glass panel unit, the method comprising:
 an assembling step; 
 a setting step; 
 a determining step; and 
 an installation step, 
 the assembling step being a step of preparing an assembly, the assembly including
 a first glass pane, 
 a second glass pane facing the first glass pane, 
 a peripheral wall located between the first glass pane and the second glass pane and having a frame shape, 
 an inside space surrounded by the first glass pane, the second glass pane, and the peripheral wall, 
 a partition dividing the inside space into a first space and a second space, 
 
 an evacuation port connecting the second space to an outside space, and
 an air passage configured such that the first space is evacuated through the evacuation port, the air passage having a slit, the slit being in contact with an inner peripheral edge of the peripheral wall and being disposed between the peripheral wall and the partition, 
 
 the setting step being a step of setting a plurality of holder installation areas along an outer peripheral edge of the peripheral wall, 
 the determining step being a step of determining that each of the plurality of holder installation areas is a first area or a second area, the slit and the peripheral wall not being adjacent to each other in the first area, the slit and the peripheral wall being adjacent to each other in the second area, 
 the installation step being a step of providing a holder in the first area without providing the holder in the second area. 
 
     
     
       2. The method of  claim 1 , wherein
 in the setting step, the plurality of holder installation areas are set equidistantly spaced from each other on a side of the peripheral wall. 
 
     
     
       3. The method of  claim 1 , wherein
 the first area includes a plurality of first areas along an outer peripheral edge of the peripheral wall. 
 
     
     
       4. The method of  claim 3 , wherein
 the holder includes a plurality of holders, and the plurality of holders are disposed in all of the plurality of first areas. 
 
     
     
       5. The method of  claim 1 , further comprising:
 an evacuation step; and 
 a sealing step, wherein 
 the evacuation step is a step of evacuating the first space through the air passage, the second space, and the evacuation port, and 
 the sealing step is a step of forming a partition by deforming the partition to close the air passage, the partition hermetically dividing the inside space into the first space and the second space. 
 
     
     
       6. The method of  claim 5 , further comprising a removal step, wherein
 the removal step is a step of removing a portion having the second space to obtain a glass panel unit which is a portion having the first space. 
 
     
     
       7. The method of  claim 2 , wherein
 the first area includes a plurality of first areas along an outer peripheral edge of the peripheral wall. 
 
     
     
       8. The method of  claim 7 , wherein
 the holder includes a plurality of holders, and the plurality of holders are disposed in all of the plurality of first areas. 
 
     
     
       9. The method of  claim 2 , further comprising:
 an evacuation step; and 
 a sealing step, wherein 
 the evacuation step is a step of evacuating the first space through the air passage, the second space, and the evacuation port, and 
 the sealing step is a step of forming a partition by deforming the partition to close the air passage, the partition hermetically dividing the inside space into the first space and the second space. 
 
     
     
       10. The method of  claim 3 , further comprising:
 an evacuation step; and 
 a sealing step, wherein 
 the evacuation step is a step of evacuating the first space through the air passage, the second space, and the evacuation port, and 
 the sealing step is a step of forming a partition by deforming the partition to close the air passage, the partition hermetically dividing the inside space into the first space and the second space. 
 
     
     
       11. The method of  claim 4 , further comprising:
 an evacuation step; and 
 a sealing step, wherein 
 the evacuation step is a step of evacuating the first space through the air passage, the second space, and the evacuation port, and 
 the sealing step is a step of forming a partition by deforming the partition to close the air passage, the partition hermetically dividing the inside space into the first space and the second space. 
 
     
     
       12. The method of  claim 7 , further comprising:
 an evacuation step; and 
 a sealing step, wherein 
 the evacuation step is a step of evacuating the first space through the air passage, the second space, and the evacuation port, and 
 the sealing step is a step of forming a partition by deforming the partition to close the air passage, the partition hermetically dividing the inside space into the first space and the second space. 
 
     
     
       13. The method of  claim 8 , further comprising:
 an evacuation step; and 
 a sealing step, wherein 
 the evacuation step is a step of evacuating the first space through the air passage, the second space, and the evacuation port, and 
 the sealing step is a step of forming a partition by deforming the partition to close the air passage, the partition hermetically dividing the inside space into the first space and the second space. 
 
     
     
       14. The method of  claim 9 , further comprising a removal step, wherein
 the removal step is a step of removing a portion having the second space to obtain a glass panel unit which is a portion having the first space. 
 
     
     
       15. The method of  claim 10 , further comprising a removal step, wherein
 the removal step is a step of removing a portion having the second space to obtain a glass panel unit which is a portion having the first space. 
 
     
     
       16. The method of  claim 11 , further comprising a removal step, wherein
 the removal step is a step of removing a portion having the second space to obtain a glass panel unit which is a portion having the first space. 
 
     
     
       17. The method of  claim 12 , further comprising a removal step, wherein
 the removal step is a step of removing a portion having the second space to obtain a glass panel unit which is a portion having the first space. 
 
     
     
       18. The method of  claim 13 , further comprising a removal step, wherein
 the removal step is a step of removing a portion having the second space to obtain a glass panel unit which is a portion having the first space.